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Enhancing the potential use of microparticulate insecticides through removal of particles from raw grain
Journal of Stored Products Research ( IF 2.7 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.jspr.2020.101707
Micaela Buteler , Javier G. Gitto , Teodoro Stadler

Abstract The current study presents the design and evaluation of a laboratory device combining mechanical motion of wheat grain and turbulent air streaming inside a positive pneumatic conveyor system. The device recovers microparticulate nano-engineered alumina insecticide powders (NAIP) from treated grain. The particle removal efficiency of the conveying system was experimentally quantified by using a laboratory prototype assembled by attaching an electrostatic filter (EF) to the conveyors exhaust. Then, the NAIP particles detached from the grain inside the conveyor were drawn by the conveyors’ exhaust air stream into the EF, where particles bound to the electrodes due to electric charge differences. The NAIP particle load bound to the EF electrodes was removed and weighed to determine the efficiency of the wheat grain cleaning process. Our experimental results, under laboratory conditions, show that the recovery efficiency of the prototype averaged 98.0% (±1.4). Thus, the present study provides an innovative strategy to remove NAIP insecticide particles after storage, once their role as insecticide in stored grain has been fulfilled. This technology provides advancement in grain technology allowing the possibility to provide insecticide-free grain to the food market.

中文翻译:

通过去除原粮中的颗粒来提高微粒杀虫剂的潜在用途

摘要 当前的研究介绍了一种实验室设备的设计和评估,该设备将小麦谷物的机械运动与正气力输送系统内的湍流气流相结合。该设备从处理过的谷物中回收微粒纳米工程氧化铝杀虫剂粉末 (NAIP)。输送系统的颗粒去除效率是通过使用实验室原型通过将静电过滤器 (EF) 连接到输送机排气口而组装的实验量化的。然后,从传送带内的谷物分离的 NAIP 粒子被传送带的废气流吸入 EF,在那里粒子由于电荷差异而与电极结合。去除与 EF 电极结合的 NAIP 颗粒负载并称重以确定小麦籽粒清洁过程的效率。我们在实验室条件下的实验结果表明,原型的回收效率平均为 98.0% (±1.4)。因此,本研究提供了一种创新策略,可以在储存后去除 NAIP 杀虫剂颗粒,一旦它们在储存谷物中作为杀虫剂的作用已经实现。该技术提供了谷物技术的进步,使向食品市场提供无杀虫剂谷物成为可能。
更新日期:2020-12-01
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